Radiologic measurements of the mandible: a comparison between CT-reformatted and conventional tomographic images.
Identifieur interne : 002C63 ( PubMed/Corpus ); précédent : 002C62; suivant : 002C64Radiologic measurements of the mandible: a comparison between CT-reformatted and conventional tomographic images.
Auteurs : Tomomi Hanazawa ; Tsukasa Sano ; Kenji Seki ; Tomohiro OkanoSource :
- Clinical oral implants research [ 0905-7161 ] ; 2004.
English descriptors
- KwdEn :
- Aged, Aged, 80 and over, Alveolar Process (diagnostic imaging), Analysis of Variance, Cadaver, Dental Implantation, Endosseous, Diagnostic Errors, Female, Humans, Jaw, Edentulous (diagnostic imaging), Male, Mandible (diagnostic imaging), Mandibular Nerve (diagnostic imaging), Patient Care Planning, Radiographic Magnification, Radiography, Dental (methods), Radiography, Dental, Digital (instrumentation), Reproducibility of Results, Tomography Scanners, X-Ray Computed, Tomography, X-Ray Computed (methods).
- MESH :
- diagnostic imaging : Alveolar Process, Jaw, Edentulous, Mandible, Mandibular Nerve.
- instrumentation : Radiography, Dental, Digital.
- methods : Radiography, Dental, Tomography, X-Ray Computed.
- Aged, Aged, 80 and over, Analysis of Variance, Cadaver, Dental Implantation, Endosseous, Diagnostic Errors, Female, Humans, Male, Patient Care Planning, Radiographic Magnification, Reproducibility of Results, Tomography Scanners, X-Ray Computed.
Abstract
This study was carried out to compare the accuracy of determination of the mandibular contour and the position of the mandibular canal in cadaver mandibles by the multiplanar reconstruction method (MPR-CT), which has recently come to be used widely for preoperative examinations, with those by tomographic techniques and to evaluate the usefulness of MPR-CT. Using three imaging systems, i.e. Quantum CT scanner, Scanora, and OP-100, a total of 6 sites were scanned in the molar regions of 3 cadaver mandibles. The images obtained were measured twice each by 4 radiologists. The anatomic structures measured were the height and thickness of the mandible, distance from the alveolar crest to the mandibular canal, and distance from the buccal cortical bone to the mandibular canal. After scanning, the scanned areas of the mandibles were sliced at a thickness of 2 mm, and soft X-ray images of these slices were obtained. The values of the above 4 anatomic structures obtained by measurements in the soft X-ray radiograms using digital-display calipers were regarded as true values. When compared with the true values, the errors in the distance from the alveolar crest to the mandibular canal were within 1 mm (+/- 1 mm) in 93.7% of the measurements by Direct-CT, 89.6% of the measurements by MPR-CT, 87.5% of the measurements by Scanora, and 47.9% of the measurements by OP-100, and the accuracy of the 4 methods ranked in the order of Direct-CT, MPR-CT, Scanora, and OP-100. A similar tendency was observed in the measurements of other anatomic structures, and statistically significant differences were observed among the methods. Thus, MPR-CT allows more accurate measurements than by the other 2 tomographic techniques,and to be useful as a preoperative examination for implant surgery.
PubMed: 15008935
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pubmed:15008935Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Radiologic measurements of the mandible: a comparison between CT-reformatted and conventional tomographic images.</title><author><name sortKey="Hanazawa, Tomomi" sort="Hanazawa, Tomomi" uniqKey="Hanazawa T" first="Tomomi" last="Hanazawa">Tomomi Hanazawa</name><affiliation><nlm:affiliation>Department of Radiology, Showa University School of Dentistry, Tokyo, Japan. thana@senzoku.showa-u.ac.jp</nlm:affiliation></affiliation></author><author><name sortKey="Sano, Tsukasa" sort="Sano, Tsukasa" uniqKey="Sano T" first="Tsukasa" last="Sano">Tsukasa Sano</name></author><author><name sortKey="Seki, Kenji" sort="Seki, Kenji" uniqKey="Seki K" first="Kenji" last="Seki">Kenji Seki</name></author><author><name sortKey="Okano, Tomohiro" sort="Okano, Tomohiro" uniqKey="Okano T" first="Tomohiro" last="Okano">Tomohiro Okano</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2004">2004</date><idno type="RBID">pubmed:15008935</idno><idno type="pmid">15008935</idno><idno type="wicri:Area/PubMed/Corpus">002C63</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">002C63</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Radiologic measurements of the mandible: a comparison between CT-reformatted and conventional tomographic images.</title><author><name sortKey="Hanazawa, Tomomi" sort="Hanazawa, Tomomi" uniqKey="Hanazawa T" first="Tomomi" last="Hanazawa">Tomomi Hanazawa</name><affiliation><nlm:affiliation>Department of Radiology, Showa University School of Dentistry, Tokyo, Japan. thana@senzoku.showa-u.ac.jp</nlm:affiliation></affiliation></author><author><name sortKey="Sano, Tsukasa" sort="Sano, Tsukasa" uniqKey="Sano T" first="Tsukasa" last="Sano">Tsukasa Sano</name></author><author><name sortKey="Seki, Kenji" sort="Seki, Kenji" uniqKey="Seki K" first="Kenji" last="Seki">Kenji Seki</name></author><author><name sortKey="Okano, Tomohiro" sort="Okano, Tomohiro" uniqKey="Okano T" first="Tomohiro" last="Okano">Tomohiro Okano</name></author></analytic><series><title level="j">Clinical oral implants research</title><idno type="ISSN">0905-7161</idno><imprint><date when="2004" type="published">2004</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Aged</term><term>Aged, 80 and over</term><term>Alveolar Process (diagnostic imaging)</term><term>Analysis of Variance</term><term>Cadaver</term><term>Dental Implantation, Endosseous</term><term>Diagnostic Errors</term><term>Female</term><term>Humans</term><term>Jaw, Edentulous (diagnostic imaging)</term><term>Male</term><term>Mandible (diagnostic imaging)</term><term>Mandibular Nerve (diagnostic imaging)</term><term>Patient Care Planning</term><term>Radiographic Magnification</term><term>Radiography, Dental (methods)</term><term>Radiography, Dental, Digital (instrumentation)</term><term>Reproducibility of Results</term><term>Tomography Scanners, X-Ray Computed</term><term>Tomography, X-Ray Computed (methods)</term></keywords><keywords scheme="MESH" qualifier="diagnostic imaging" xml:lang="en"><term>Alveolar Process</term><term>Jaw, Edentulous</term><term>Mandible</term><term>Mandibular Nerve</term></keywords><keywords scheme="MESH" qualifier="instrumentation" xml:lang="en"><term>Radiography, Dental, Digital</term></keywords><keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Radiography, Dental</term><term>Tomography, X-Ray Computed</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Aged</term><term>Aged, 80 and over</term><term>Analysis of Variance</term><term>Cadaver</term><term>Dental Implantation, Endosseous</term><term>Diagnostic Errors</term><term>Female</term><term>Humans</term><term>Male</term><term>Patient Care Planning</term><term>Radiographic Magnification</term><term>Reproducibility of Results</term><term>Tomography Scanners, X-Ray Computed</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">This study was carried out to compare the accuracy of determination of the mandibular contour and the position of the mandibular canal in cadaver mandibles by the multiplanar reconstruction method (MPR-CT), which has recently come to be used widely for preoperative examinations, with those by tomographic techniques and to evaluate the usefulness of MPR-CT. Using three imaging systems, i.e. Quantum CT scanner, Scanora, and OP-100, a total of 6 sites were scanned in the molar regions of 3 cadaver mandibles. The images obtained were measured twice each by 4 radiologists. The anatomic structures measured were the height and thickness of the mandible, distance from the alveolar crest to the mandibular canal, and distance from the buccal cortical bone to the mandibular canal. After scanning, the scanned areas of the mandibles were sliced at a thickness of 2 mm, and soft X-ray images of these slices were obtained. The values of the above 4 anatomic structures obtained by measurements in the soft X-ray radiograms using digital-display calipers were regarded as true values. When compared with the true values, the errors in the distance from the alveolar crest to the mandibular canal were within 1 mm (+/- 1 mm) in 93.7% of the measurements by Direct-CT, 89.6% of the measurements by MPR-CT, 87.5% of the measurements by Scanora, and 47.9% of the measurements by OP-100, and the accuracy of the 4 methods ranked in the order of Direct-CT, MPR-CT, Scanora, and OP-100. A similar tendency was observed in the measurements of other anatomic structures, and statistically significant differences were observed among the methods. Thus, MPR-CT allows more accurate measurements than by the other 2 tomographic techniques,and to be useful as a preoperative examination for implant surgery.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">15008935</PMID><DateCompleted><Year>2004</Year><Month>06</Month><Day>22</Day></DateCompleted><DateRevised><Year>2016</Year><Month>11</Month><Day>24</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0905-7161</ISSN><JournalIssue CitedMedium="Print"><Volume>15</Volume><Issue>2</Issue><PubDate><Year>2004</Year><Month>Apr</Month></PubDate></JournalIssue><Title>Clinical oral implants research</Title><ISOAbbreviation>Clin Oral Implants Res</ISOAbbreviation></Journal><ArticleTitle>Radiologic measurements of the mandible: a comparison between CT-reformatted and conventional tomographic images.</ArticleTitle><Pagination><MedlinePgn>226-32</MedlinePgn></Pagination><Abstract><AbstractText>This study was carried out to compare the accuracy of determination of the mandibular contour and the position of the mandibular canal in cadaver mandibles by the multiplanar reconstruction method (MPR-CT), which has recently come to be used widely for preoperative examinations, with those by tomographic techniques and to evaluate the usefulness of MPR-CT. Using three imaging systems, i.e. Quantum CT scanner, Scanora, and OP-100, a total of 6 sites were scanned in the molar regions of 3 cadaver mandibles. The images obtained were measured twice each by 4 radiologists. The anatomic structures measured were the height and thickness of the mandible, distance from the alveolar crest to the mandibular canal, and distance from the buccal cortical bone to the mandibular canal. After scanning, the scanned areas of the mandibles were sliced at a thickness of 2 mm, and soft X-ray images of these slices were obtained. The values of the above 4 anatomic structures obtained by measurements in the soft X-ray radiograms using digital-display calipers were regarded as true values. When compared with the true values, the errors in the distance from the alveolar crest to the mandibular canal were within 1 mm (+/- 1 mm) in 93.7% of the measurements by Direct-CT, 89.6% of the measurements by MPR-CT, 87.5% of the measurements by Scanora, and 47.9% of the measurements by OP-100, and the accuracy of the 4 methods ranked in the order of Direct-CT, MPR-CT, Scanora, and OP-100. A similar tendency was observed in the measurements of other anatomic structures, and statistically significant differences were observed among the methods. Thus, MPR-CT allows more accurate measurements than by the other 2 tomographic techniques,and to be useful as a preoperative examination for implant surgery.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Hanazawa</LastName><ForeName>Tomomi</ForeName><Initials>T</Initials><AffiliationInfo><Affiliation>Department of Radiology, Showa University School of Dentistry, Tokyo, Japan. thana@senzoku.showa-u.ac.jp</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Sano</LastName><ForeName>Tsukasa</ForeName><Initials>T</Initials></Author><Author ValidYN="Y"><LastName>Seki</LastName><ForeName>Kenji</ForeName><Initials>K</Initials></Author><Author ValidYN="Y"><LastName>Okano</LastName><ForeName>Tomohiro</ForeName><Initials>T</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D023362">Evaluation Studies</PublicationType><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>Denmark</Country><MedlineTA>Clin Oral Implants Res</MedlineTA><NlmUniqueID>9105713</NlmUniqueID><ISSNLinking>0905-7161</ISSNLinking></MedlineJournalInfo><CitationSubset>D</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D000368" MajorTopicYN="N">Aged</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D000369" MajorTopicYN="N">Aged, 80 and over</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D000539" MajorTopicYN="N">Alveolar Process</DescriptorName><QualifierName UI="Q000000981" MajorTopicYN="Y">diagnostic imaging</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D000704" MajorTopicYN="N">Analysis of Variance</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D002102" MajorTopicYN="N">Cadaver</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D003758" MajorTopicYN="N">Dental Implantation, Endosseous</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D003951" MajorTopicYN="N">Diagnostic Errors</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D005260" MajorTopicYN="N">Female</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D006801" MajorTopicYN="N">Humans</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D007575" MajorTopicYN="N">Jaw, Edentulous</DescriptorName><QualifierName UI="Q000000981" MajorTopicYN="Y">diagnostic imaging</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D008297" MajorTopicYN="N">Male</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D008334" MajorTopicYN="N">Mandible</DescriptorName><QualifierName UI="Q000000981" MajorTopicYN="Y">diagnostic imaging</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D008340" MajorTopicYN="N">Mandibular Nerve</DescriptorName><QualifierName UI="Q000000981" MajorTopicYN="N">diagnostic imaging</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D010347" MajorTopicYN="N">Patient Care Planning</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D011858" MajorTopicYN="N">Radiographic Magnification</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D011861" MajorTopicYN="N">Radiography, Dental</DescriptorName><QualifierName UI="Q000379" MajorTopicYN="Y">methods</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D019252" MajorTopicYN="N">Radiography, Dental, Digital</DescriptorName><QualifierName UI="Q000295" MajorTopicYN="N">instrumentation</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D015203" MajorTopicYN="N">Reproducibility of Results</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D015898" MajorTopicYN="N">Tomography Scanners, X-Ray Computed</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D014057" MajorTopicYN="N">Tomography, X-Ray Computed</DescriptorName><QualifierName UI="Q000379" MajorTopicYN="N">methods</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>2004</Year><Month>3</Month><Day>11</Day><Hour>5</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2004</Year><Month>6</Month><Day>23</Day><Hour>5</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2004</Year><Month>3</Month><Day>11</Day><Hour>5</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">15008935</ArticleId><ArticleId IdType="pii">991</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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